uid=ARC,o=lter,dc=ecoinformatics,dc=org all public read 2001lgshttcn.07 Arctic LTER Program Laura Gough

Department of Biology Box 19498 University of Texas at Arlington Arlington Texas 76019 USA

Arctic LTER Program Sarah Hobbie

Department of Ecology, Evolution and Behavior University of Minnesota 1987 Upper Buford Circle St. Paul MN 55108 USA

Arctic LTER Program

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ Gus Shaver Associated Researcher 2005 Percent carbon and percent nitrogen were measured from above ground plant and belowground stem biomass samples from experimental plots in moist acidic and moist non-acidic tundra. Biomass data are in 2001lgshttbm.dat. Alaska biomass productivity carbon nitrogen phosphorus tundra primary production disturbance inorganic nutrients organic matter populations Acceptance and utilization of LTER data requires that: The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions. The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications A copy of any resultant publications should be sent to: Principal Investigator Ecosystems Center Marine Biological Laboratory Woods Hole, MA 02543 http://ecosystems.mbl.edu/ARC/meta_template.php?FileName=./terrest/biomass/xlsfiles/2001lgshttcn.html Arctic LTER, Toolik Field Station, North Slope Alaska(68 degrees 38'N, 149 degrees 34'W, elevation 750 m). Moist Acidic Tussock Tundra. -149.61058 -149.61058 68.62405 68.62405 Arctic LTER, Toolik Field Station, North Slope Alaska(68 degrees 38'N, 149 degrees 34'W, elevation 740 m). Moist Non-acidic Tussock Tundra. -149.64074 -149.64074 68.6342 68.6342 2001-07-23 2001-08-01 Organisms Studied Genus Betula Species nana Genus Carex Species bigelowii Genus Cassiope Species tetragona Genus Eriophorum Species vaginatum Log of changes: Version 3: : Translated metadata into Excel metada worksheet, added attribute table and title. Jan 2006 Jiml Version 4: Added LTERNET Data Access server proxy for Excel and comma delimited data files. Version 5: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url. Version 6: Updated metadata form to new version and eml to 2.1.0 JimL 10Jul2012 Version 7: Taxonomic coverage data updated.Updated metadata to newer form (with sites sheet). CH March 2013 Data Manager

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ ARC LTER

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ Plots at the acidic site (MAT) were set up in July 1996 on extra 5 x 20 meters plots within the four block design of the 1989 LTER acidic tussock experimental plots. On each plot a 5x10 meter section was fenced with large mesh (4-inch square mesh) and within this fence a 5x5-meter plot was fenced with a small mesh (1/2-inch square mesh). In each block two fenced plots were setup: a plot with no fertilizer and a plot with annual fertilization (NP) treatments of 10 g/m2 Nitrogen (as NH4NO3) and 5 g/m2 Phosphorous (as triple superphosphate). In this biomass harvest only the control unfenced (NFCT) and NP unfenced (NFNP) treatments were sampled. Plots at the non-acidic site (MNT) were setup in July 1997. Three replicate blocks were established with the following annual treatments in 5 x 20 m plots: control, nitrogen added (N), phosphorus added (P) and N and P (NP) in the same amounts as described for the MAT site. Two replicate blocks were established with a greenhouse treatment (GH) and a greenhouse fertilized treatment (GHNP). Greenhouses are annually set up in late May or early June and removed in the end of August or early September. In this biomass harvest only the control and NP treatments were sampled. Sampling Description. Biomass quadrats, size 20x20 cm, were taken from each site. Four quadrats were randomly located along line transects in each of the replicate blocks of each treatment. Aboveground biomass is considered "within" the quadrat if it is associated with a meristem that is within the quadrat. Quadrats were sorted within 24 hours into species and then into tissue type. The samples were dried at 50-70 degrees C in a drying oven and after several days weighed to nearest milligram. Details are given in Shaver and Chapin (Ecological Monographs, 61(1), 1991, pg. 1-31.) Samples were lumped by block and subsequently ground in a Wiley Mill and a Wig-L-Bug and shipped to the University of Nebraska, Lincoln to be analyzed for percent C and N on an elemental analyzer (ECS 4010, Costech Analytical, Valencia, California). pers-1 John Hobbie

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 jhobbie@mbl.edu Lead PI Gus Shaver

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 gshaver@mbl.edu Lead PI Jim Laundre

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_imr@mbl.edu Information Manager The goal of Arctic LTER project is to predict the future ecological characteristics of the site based upon our knowledge of the controls of ecosystem structure and function as exerted by physical setting and geologic factors, climatic factors, biotic factors, and the changes in fluxes of water and materials from land to water. To achieve this goal the Arctic LTER uses several approaches: Long-term monitoring and surveys of natural variation of ecosystem characteristics in space and time. Includes: climate, plant communities and productivity, thaw depth, stream flow, chemistry of streams and lakes, temperatures of streams and lakes, lake chlorophyll lake productivity, zooplankton abundance. Experimental manipulation of ecosystems for years and decades. Includes: tundra warming, shading, and fertilizing, grazer exclusions, fertilization of lakes and streams, addition and subtraction of predators. Synthesis of results and predictive modeling at ecosystem and watershed scales. Includes: stream N cycling, lake physics, bioenergetics of fish populations, water movement and transfer of DOC and nutrients from land to water, soil respiration, cycling and storage of C in tundra under different scenarios of future climates. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The Arctic LTER research site (68°N and 149°W) is in the foothills region of the North Slope of Alaska and includes the entire Toolik Lake watershed and the adjacent watershed of the upper Kuparuk River, down to the confluence of these two watersheds. This area is typical of the northern foothills of the Brooks Range, with continuous permafrost, no trees, a complete snow cover for 7 to 9 months, winter ice cover on lakes, streams, and ocean, and cessation of river flow during the winter. Tussock tundra vegetation of sedges and grasses mixed with dwarf birch and low willows form the dominant vegetation type with areas of drier heath tundra on ridge tops and other well-drained sites as well as areas of river-bottom willow communities. -149.75 -149.0433 68.8 68.5 610 1360 meter 2001lgshttcn.csv Percent carbon and percent nitrogen of above ground plant and belowground stem biomass samples from experimental plots in moist acidic and moist non-acidic tundra, 2001, Arctic LTER, Toolik Lake, Alaska. 2001lgshttcn.csv 1 \r\n column , " http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1397&urlTail=terrest/biomass/data/2001lgshttcn.csv Date Date Date of beginning of harvest. Harvests usually last 4-5 days. dd-mon-yy Site Site Site of harvest Site of harvest Treatment Treatment Plot treatment Plot treatment Species Species The species sampled or a lumped group. ?Other? groups contained all other species within that growth form; see 2001lgshttbm.dat for other species present in each block. The species sampled or a lumped group. ?Other? groups contained all other species within that growth form; see 2001lgshttbm.dat for other species present in each block. Tissue Tissue The tissue type analyzed The tissue type analyzed B1%C B1%C The percent carbon in tissues from species or lumped group in all quadrats in block 1 percent real . code for missing values B1%N B1%N The percent nitrogen in tissues from species or lumped group in all quadrats in block 1 percent real . code for missing values B1Notes B1Notes Notes for tissue analyzed in block 1 Notes for tissue analyzed in block 1 B2%C B2%C The percent carbon in tissues from species or lumped group in all quadrats in block 2 percent real . code for missing values B2%N B2%N The percent nitrogen in tissues from species or lumped group in all quadrats in block 2 percent real . code for missing values B2Notes B2Notes Notes for tissue analyzed in block 2 Notes for tissue analyzed in block 2 B3%C B3%C The percent carbon in tissues from species or lumped group in all quadrats in block 3 percent real . code for missing values B3%N B3%N The percent nitrogen in tissues from species or lumped group in all quadrats in block 3 percent real . code for missing values B3Notes B3Notes Notes for tissue analyzed in block 3 Notes for tissue analyzed in block 3 B4%C B4%C The percent carbon in tissues from species or lumped group in all quadrats in block 4 percent real . code for missing values B4%N B4%N The percent nitrogen in tissues from species or lumped group in all quadrats in block 4 percent real . code for missing values B4Notes B4Notes Notes for tissue analyzed in block 4 Notes for tissue analyzed in block 4 92 2001lgshttcn.xls An excel file that has worksheets with the metadata and data. 2001lgshttcn.xls Microsoft Excel http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1397&urlTail=terrest/biomass/xlsfiles/2001lgshttcn.xls Microsoft Excel file ratio of two quantities as percent composition (1:100)